Where is the Java bug in my constructor code for this KnockKnockProtocol class? -

i'm studying following client/server code called knockknockserver , knockknockclient. has helper class called knockknockprotcol, responsible order of knockknock jokes.

i want modify can start program @ specific joke. right now, have start first joke.

this tried knockknockprotocol:

public class knockknockprotocol {      int ourstep;      public knockknockprotocol (int step) {         this.ourstep = step;     }      private static final int waiting = 0;     private static final int sentknockknock = 1;     private static final int sentclue = 2;     private static final int = 3;      private static final int numjokes = 5;      private int state = waiting;     int currentjoke = ourstep;  //we initialize step here      private string[] clues = { "turnip", "little old lady", "atch", "who", "who" };     private string[] answers = { "turnip heat, it's cold in here!",                                  "i didn't know yodel!",                                  "bless you!",                                  "is there owl in here?",                                  "is there echo in here?" };      public string processinput(string theinput) {         string theoutput = null;          if (state == waiting) {             theoutput = "knock! knock!";             state = sentknockknock;         } else if (state == sentknockknock) {             if (theinput.equalsignorecase("who's there?")) {                 theoutput = clues[currentjoke];                 state = sentclue;             } else {                 theoutput = "you're supposed \"who's there?\"! " +                 "try again. knock! knock!";             }         } else if (state == sentclue) {             if (theinput.equalsignorecase(clues[currentjoke] + " who?")) {                 theoutput = answers[currentjoke] + " want another? (y/n)";                 state = another;             } else {                 theoutput = "you're supposed \"" +                  clues[currentjoke] +                  " who?\"" +                  "! try again. knock! knock!";                 state = sentknockknock;             }         } else if (state == another) {             if (theinput.equalsignorecase("y")) {                 theoutput = "knock! knock!";                 if (currentjoke == (numjokes - 1))                     currentjoke = 0;                 else                     currentjoke++;                 state = sentknockknock;             } else {                 theoutput = "bye.";                 state = waiting;             }         }         return theoutput;     } } 

and in server class, call knockknockprotocol :

    /* omitting boilerplate code */     string inputline, outputline;      // initiate conversation client     knockknockprotocol kkp = new knockknockprotocol(2);     outputline = kkp.processinput(null);     out.println(outputline);      while ((inputline = in.readline()) != null) {         outputline = kkp.processinput(inputline);         out.println(outputline);         if (outputline.equals("bye."))             break; 

the problem , when run code starting "turnip" joke. how make can start @ arbitrary joke within list of jokes? can see joke controlled clues array, after i'm not seeing it. thanks

if @ input knockknockprotocol constructor, notice directly affects currentjoke counter via this.ourstep used reference clues array.

therefore start @ different locations can pass in different number in constructor @ beginning of program.

hope helps!